Adding to a vector of pair

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I have a pair vector that looks like this:

vector<pair<string,double>> revenue;

I'd want to add a string and a double from a map that looks like this:

revenue[i].first = "string";
revenue[i].second = map[i].second;

However, because revenue is not initialised, it returns an out of bounds error. 

So I tried using vector::push_back like this:

revenue.push_back("string",map[i].second);

However, it is not possible to take two arguments at the same time. 

So, how can I add to this pair vector?

Jul 26, 2022 in C++ by Nicholas
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